For standard 3-1/4 x 10 in duct. Damper spring controlled.
||9.17 in L x 12.5 in W x 5.56 in H
||(1) Aluminum Wall Cap
||10 x 3-1/4 in Hoods
- Open/closing damper prevents outside elements from entering the vent
- Damper is spring loaded to keep damper closed when not in use